my note 3 battery is not that good at all, before i had a Samsung galaxy s5 and that battery was better then my note 3 and my brother he had a note 3 when it came out and his battery lasted longer too. Also am on 5.0 from light game play about 5 mins and i watch you tube everyday and the battery goes from 100% too 75 after watching 3 vids about 25 mins long and my s5 100% to 90 and watching 3 vids about 25 mins. So i dont know what happing my screen brightness on about 3 or 10% and its the same settings i had on my 5 and note 3 can any one help? do i need a new battery because this is a second-hand phone and its 1 year 3 months and 9 days old